8088 vs. 80c88

Jim Lynch JeLynch at stny.rr.com
Fri Feb 20 19:54:19 CST 2009


Chuck,

Personally I loved the Nec V25 and V35 microcontrollers for small 
projects. For a "decent resource" on the Nec V20/30 did you look at 
the Nec User's Manual for the V Series (~ 1 thick, Circa 1992)?

I have one around here somewhere.

Jim

At 07:59 PM 2/20/2009, you wrote:
>Chuck Guzis wrote:
>>It's also worthwhile to mention that the V20/30 has instructions 
>>that none of the Intel x86 members has, such as packed BCD string arithmetic.
>
>I have never found a decent resource on NEC V20 special opcode 
>programming; the only stuff I've found has been on how to detect an 
>NEC through bugs, and searching via google has been unproductive for 
>the last 20 minutes.  Is there a resource for what the extended 
>instructions were, or is that lost to paper history?
>--
>Jim Leonard (trixter at oldskool.org)            http://www.oldskool.org/
>Help our electronic games project:           http://www.mobygames.com/
>Or check out some trippy MindCandy at     http://www.mindcandydvd.com/
>A child borne of the home computer wars: http://trixter.wordpress.com/
>
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[]

Jim
e-mail:   JeLynch at stny.rr.com
website: <http://www.gluons.us>www.gluons.us




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